9-10高二·四川巴中·期末
1 . 下列命题:
①函数
在区间
上是单调递增的;
②在
中,
, 当三角形ABC的面积为
时,
;
③若
为非零向量,且
,则满足条件的向量
有无数个;
④已知
,且
,
,则
.
其中正确命题的序号为____________ . (注:把你认为正确的序号都填上)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23050a18db5bb91c3491824998603b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98f4acbe230001ea86b03440b25e8045.png)
②在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e89435b1523a275c6f9e9382acbfea44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a431c5068ba5c32af44906b40b33ce11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
④已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e592a54ea5e382967a04025dcd750bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ebb96c73c0abf240bdc3f9d1ecec7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab0f0e61713a059fc61832522acab1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/772a8dc0935bae46b2bc322bb84d47d6.png)
其中正确命题的序号为
您最近一年使用:0次
名校
2 . 给出以下几个结论:
①若
,
,则
;
②如果
且
都不为
,则
,
;
③若
,
是夹角为
的两个单位向量,则
,
的夹角为
;
④在
中,三内角
所对的边分别为
,则
;
其中正确结论的序号为______ .
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f75807858b7804a1ad2039c41f323a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90882db1028f1e2440339d203c1901e6.png)
②如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6893511ebfd1fac1412774e04e10748d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44bc5f0ef5e9129e22310d5ea17cf1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5600adbf8003f263ae7baf49c05071.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2868a9fe011f56a80c9d1a8ee4604d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36fe4e713c108e118522a99ecd683924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0942b32552d016471809659af20ac97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4c7e86192bb666b3fb41b3694e79d53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
④在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be845b564ed27a6093a44e5be491601.png)
其中正确结论的序号为
您最近一年使用:0次
2020-05-15更新
|
407次组卷
|
2卷引用:四川省眉山市2018-2019学年高一下学期期末数学试题
名校
3 . 已知在
中,有
,则下列说法中:
①
为钝角三角形;
②
;
③
.
正确说法的序号是_______________ .(填上所有正确说法的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09a3afce08e60c0307602c47dccb20e4.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/537cbf6768befe0354ee668a7a5614e7.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e77a62fe16fe5bf112b20b3d120b299a.png)
正确说法的序号是
您最近一年使用:0次
2021-10-29更新
|
719次组卷
|
4卷引用:北京市中国农业大学附属中学2020-2021学年高一下学期期末数学试题
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